<template>
  <div class="login-container">
    <div class="login-box">
      <!-- 头像 -->
      <div class="avatar-box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 表单区域 -->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        :rules="loginFormRules"
        class="login-form"
        label-width="0px"
      >
        <el-form-item prop="username">
          <el-input
            v-model="loginForm.username"
            prefix-icon="iconfont icon-user"
          ></el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
            type="password"
            v-model="loginForm.password"
            prefix-icon="iconfont icon-3702mima"
          ></el-input>
        </el-form-item>
        <el-form-item class="btns">
          <el-button @click="login" type="primary">登录</el-button>
          <el-button @click="resetLoginForm" type="info">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      // 表单数据绑定
      loginForm: {
        username: 'admin',
        password: '123456',
      },
      // 验证规则
      loginFormRules: {
        username: [
          {
            required: true,
            message: '请输入用户名称',
            trigger: 'blur',
          },
          {
            min: 3,
            max: 5,
            message: '长度在 3 到 5 个字符',
            trigger: 'blur',
          },
        ],
        password: [
          {
            required: true,
            message: '请输入登录密码',
            trigger: 'blur',
          },
          {
            min: 6,
            max: 15,
            message: '长度在 6 到 15 个字符',
            trigger: 'blur',
          },
        ],
      },
    }
  },
  methods: {
    // this
    // 点击重置表单
    resetLoginForm() {
      this.$refs.loginFormRef.resetFields()
    },
    // 登录
    login() {
      // 手动验证
      this.$refs.loginFormRef.validate(async (valid) => {
        // console.log(valid);
        // 验证失败
        if (!valid) {
          return
        }
        // 登录成功后的返回结果 解构重命名 只是 data 有用。
        const { data: res } = await this.$http.post('login', this.loginForm)
        if (res.meta.status !== 200) return this.$message.error('登录失败')

        this.$message.success('登录成功')
        // 存token
        // console.log(res);  网站打开的期间有用
        window.sessionStorage.setItem('token', res.data.token)
        // 路由跳转
        this.$router.push('/home')
      })
    },
  },
}
</script>

<style lang="less" scoped>
.login-container {
  height: 100%;
  background-color: #2b4b6b;
}

.login-box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  //   居中
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

// 头像
.avatar-box {
  width: 130px;
  height: 130px;
  border: 1px solid #eee;
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: #ddd;
  border-radius: 50%;

  img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #eee;
  }
}

// 表单 默认是border-coent
.login-form {
  width: 100%;
  position: absolute;
  bottom: 0;
  padding: 0 20px;
  box-sizing: border-box;

  .btns {
    display: flex;
    justify-content: flex-end;
  }
}
</style>
